Firesculptor. The firemage can 'sculpt' fire easily; any non-magical flame within 30' can be shaped or enlarged as a single action and a mere effort of will as long as it remains within 30' (things outside can catch fire as normal, but the firemage has no control over them).

Fire ball. A ball of fire streaks out and explodes, attacking all within Burst 4 at a range of up to 18 squares, doing 3d6 fire damage.